EP 1779539 A1 20070502 - APPARATUS AND METHOD FOR HYBRID TRAFFIC AND PILOT SIGNAL QUALITY DETERMINATION OF FINGER LOCK STATUS OF RAKE RECEIVER CORRELATORS
Title (en)
APPARATUS AND METHOD FOR HYBRID TRAFFIC AND PILOT SIGNAL QUALITY DETERMINATION OF FINGER LOCK STATUS OF RAKE RECEIVER CORRELATORS
Title (de)
VORRICHTUNG UND VERFAHREN ZUR HYBRID-VERKEHRS- UND -PILOTSIGNAL-QUALITÄTSBESTIMMUNG DES FINGER-VERRIEGELUNGSSTATUS VON RAKE-EMPFÄNGERKORRELATOREN
Title (fr)
APPAREIL ET PROCEDE DE TRAFIC HYBRIDE ET DE DETERMINATION A PARTIR DE LA QUALITE DE SIGNAUX PILOTES DE L'ETAT DE VERROUILLAGE DE DOIGTS DE DISPOSITIFS CORRELATEURS DE RECEPTEURS RAKE
Publication
Application
Priority
- IB 2005002520 W 20050725
- US 89984604 A 20040727
Abstract (en)
[origin: US2006023774A1] Provided are improved systems and methods for spread spectrum communication employing hybrid Eb/No and pilot-based finger lock determination for RAKE receivers. Finger lock thresholds are periodically set using an extended time-averaged Eb/No traffic signal estimate for each finger mapped to an Ec/No pilot level, where the extended time-averaged Eb/No estimate is inversely proportional to the mapped Ec/No level, thus, decreasing the required Ec/No level when the Eb/No estimate increases and increasing the required Ec/No level when the Eb/No estimate decreases. Existing pilot-based finger lock algorithms may be used with the Ec/No threshold set using the extended time-averaged Eb/No estimate. When pilot signals are weak but traffic signals remain strong, fingers will remain locked to increase the combiner output signal-to-noise ratio.
IPC 8 full level
H04B 1/707 (2006.01)
CPC (source: EP US)
H04B 1/7115 (2013.01 - EP US); H04B 1/712 (2013.01 - EP US); H04B 2201/70701 (2013.01 - EP US)
Citation (search report)
See references of WO 2006013467A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2006023774 A1 20060202; US 7403557 B2 20080722; CN 101019337 A 20070815; EP 1779539 A1 20070502; WO 2006013467 A1 20060209
DOCDB simple family (application)
US 89984604 A 20040727; CN 200580030864 A 20050725; EP 05770393 A 20050725; IB 2005002520 W 20050725